This is a good little blowgun, and you should use small nails and sharpen them on a grinder until they are finger prick sharp, thats what i do for my darts but they are large nails instead of small ones, also small nail darts are more accurate and fly a longer distance than tooth pick ones

Thats why u get small nails then using a bench grinder or something like that, you grind them down so they are very light and that way there stronger, sharper and stay sharper for a longer amount of time than tooth picks.